CN219221054U - Self-lubricating ball bearing - Google Patents

Abstract

The utility model provides a self-lubricating ball bearing which comprises an outer ring, an inner ring, a retainer and balls, wherein the retainer is arranged in a split mode, the retainer is provided with pockets, the balls are placed in the pockets and are in rolling connection with raceways of the inner ring and the outer ring, two accommodating grooves are formed in the hole wall of each pocket in a facing mode, a wear reducing block is arranged in each accommodating groove, the two wear reducing blocks in each pocket are symmetrical and face to the ball center, and the wear reducing blocks are in butt joint with the balls. According to the utility model, the powder metallurgy grinding reduction block is adopted, the powder metallurgy grinding reduction block is used for automatically lubricating the balls, so that the lubricating requirement of the bearing under the high-temperature working condition is met, the normal running and supporting effect of the bearing are ensured, the problem that the bearing is damaged due to poor lubricating effect under the high-temperature condition of lubricating grease is solved, and meanwhile, compared with a coating structure on the surfaces of the balls and the rollaway nest, the bearing disclosed by the utility model has low manufacturing cost and meets the production requirement.

Description

Self-lubricating ball bearing

Technical Field

The utility model belongs to the field of bearing production, and particularly relates to a self-lubricating ball bearing.

Background

Rolling bearings are widely used in mechanical transmissions due to their low coefficient of friction and flexible starting. The rolling bearing generally consists of an outer ring, an inner ring, balls and a cage which is used for equally spacing the balls in the bearing and guiding and keeping the balls to move on a correct raceway.

Bearing lubrication can reduce corrosion of bearing parts to the greatest extent, reduce friction in the bearing and reduce abrasion of the parts, so that the bearing lubrication is an important ring for ensuring continuous rolling of balls. However, the lubricating performance of the bearing lubricating oil and the lubricating grease is affected by temperature, and when the bearing is in a high-temperature working condition, such as a working condition exceeding 350 ℃, the high temperature can seriously affect the lubricating performance of the bearing lubricating oil and the lubricating grease, even lead to lubrication failure and damage of the bearing.

At present, the problem of high-temperature lubrication failure of the bearing is generally solved by adopting a coating mode on the surface of the ball and the surface of the raceway, but the spraying process is complex, so that the bearing is high in manufacturing cost.

Disclosure of Invention

In view of the above, the present utility model aims to provide a self-lubricating ball bearing, which enables the bearing to be self-lubricated under high temperature working conditions, and meets the requirement of bearing support operation under high temperature conditions.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

the utility model provides a self-lubricating ball bearing, includes outer lane, inner circle, holder and ball, the components of a whole that can function independently sets up, is equipped with the pocket on the holder, the ball is placed in the pocket and with the raceway roll connection of inner circle and outer lane, two holding tanks have been seted up to every pocket pore wall pair, every be equipped with one in the holding tank and subtract the grinding piece, two in every pocket subtract the grinding piece symmetry and just to the ball center, it subtracts grinding piece and ball butt.

Further, antifriction piece is including the friction portion, connecting portion and the installation department of connecting in order, the connecting portion diameter is greater than the installation department diameter, friction portion and ball butt, installation department activity cartridge is in the mounting hole on the pocket hole wall, be equipped with slider-spout anti-torsion structure between installation department and the mounting hole, the installation department is equipped with the elastic component in the position department suit between connecting portion and pocket hole wall.

Further, the elastic piece is of a disc reed structure.

Furthermore, a clamping ring is arranged at one end of the mounting part extending out of the pocket hole.

Further, the friction part is of a strip-shaped plate structure, the arrangement direction of the strip-shaped plate is the circumferential tangential direction of the bearing, and the friction surface of the friction part is of a concave spherical structure corresponding to the balls.

Further, the grinding reduction block is a powder metallurgy grinding reduction block.

Further, the split riveting connection of the retainer.

Compared with the prior art, the self-lubricating ball bearing has the following advantages:

according to the utility model, the powder metallurgy grinding reduction block is adopted, the powder metallurgy grinding reduction block is used for automatically lubricating the balls, so that the lubricating requirement of the bearing under the high-temperature working condition is met, the normal running and supporting effect of the bearing are ensured, the problem that the bearing is damaged due to poor lubricating effect under the high-temperature condition of lubricating grease is solved, and meanwhile, compared with a coating structure on the surfaces of the balls and the rollaway nest, the bearing disclosed by the utility model has low manufacturing cost and meets the production requirement.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

FIG. 1 is a schematic view of a self-lubricating ball bearing according to an embodiment of the present utility model;

fig. 2 is a schematic view of a cage structure of the self-lubricating ball bearing according to the present embodiment;

FIG. 3 is a schematic view of the installation of the antifriction block in this embodiment;

FIG. 4 is a schematic perspective view of the antifriction block in this embodiment;

FIG. 5 is a front view of the wear block of the present embodiment;

FIG. 6 is a top view of the antifriction block in this embodiment;

fig. 7 is a schematic view of the structure of the mounting hole in this embodiment.

Reference numerals illustrate:

1-an outer ring; 2-an inner ring; 3-a retainer; 31-pocket holes; 32-a receiving groove; 33-mounting holes; 34-a slider; 4-balls; 5-grinding reduction blocks; 51-friction part; 52-connecting part; 53-mounting part; 54-clamping grooves; 55-sliding grooves; 511-spherical structure; 6-clamping rings; 7-an elastic member; 8-rivet.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.

The utility model will be described in detail below with reference to the drawings in connection with embodiments.

The self-lubricating ball bearing comprises an outer ring 1, an inner ring 2, a retainer 3 and balls 4, wherein the balls 4 are arranged between an outer ring raceway and an inner ring raceway in a rolling manner, the retainer 3 adopts a split structure, and then the retainer 3 is riveted together through rivets 8. The cage 3 is provided with pockets 31, and the balls 4 are placed in the pockets 31, and the balls 4 are separated by the cage 3 and guided to run on the raceways. The structure of the retainer 3 is shown in fig. 2, two accommodating grooves 32 are formed in the hole wall of each pocket hole 31 of the retainer in a right-to-right manner, a wear-reducing block 5 is arranged in each accommodating groove 32, the two wear-reducing blocks 5 in each pocket hole 31 are symmetrical and face the center of the ball 4, and the wear-reducing blocks 5 are abutted with the ball 4 as shown in fig. 3. The antifriction blocks 5 are powder metallurgy antifriction blocks, and the antifriction blocks are arranged on two sides of the balls 4 as solid lubrication to lubricate the balls 4, so that the self-lubrication requirement of the bearing is realized, and the antifriction blocks are suitable for high-temperature operation of the bearing.

The wear-reducing block 5 has a structure including a friction portion 51, a connecting portion 52, and a mounting portion 53 connected in this order, as shown in fig. 4, 5, and 6, and the friction portion 51 abuts against the balls 4, and lubricates the balls by the friction portion 51. The friction part 51 is preferably a strip-shaped plate structure, the arrangement direction is the tangential direction of the circumference of the bearing, the friction surface of the friction part 51 is a concave spherical structure 511 corresponding to the balls 4, and the friction surface contacts with the balls 4 to lubricate the balls. The connecting portion 52 and the mounting portion 53 are both cylindrical in structure, and the connecting portion 52 is larger in diameter than the mounting portion 53. Four sliding grooves 55 are axially formed in the circumferential surface of the mounting portion 53, a clamping groove 54 is formed in one end, away from the connecting portion 52, of the mounting portion 53, and the clamping groove 54 is of an annular groove structure and is used for mounting a clamping ring. The pocket hole 31 has the mounting hole 33 that corresponds with the mounting portion 53 opened, as shown in fig. 7, the mounting hole 33 pore wall protrusion has four sliders 34, and four sliders and four spouts correspond one by one, and the mounting portion 53 wears to adorn in the mounting hole 33, and the slider 34 is located the spout 55, and slider 34 and spout 55 form slider-spout anti-torsion structure, prevent to subtract the rotation of grinding piece 5, guarantee the friction surface of friction portion 51 and ball 4 contact stability. The retainer ring 6 is provided in the retainer groove 54 to limit the axial position of the antifriction block 5, and the antifriction block 5 can be prevented from slipping off the cage by the split body before assembly. The installation department 53 is equipped with elastic component 7 in the position department between connecting portion 52 and the pocket hole wall, and elastic component 7 is preferably dish reed structure, and the setting of elastic component 7 makes antifriction piece 5 have compensatory, can compensate antifriction piece 5 wearing and tearing volume, guarantees its lubricating property.

According to the utility model, the self-lubricating performance of the wear-reducing block 5 is utilized to realize the self-lubricating operation of the bearing, so that the bearing still has the lubricating performance even under the high-temperature working condition, and the supporting running performance of the bearing is ensured.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (7)

1. The utility model provides a self-lubricating ball bearing, includes outer lane (1), inner circle (2), holder (3) and ball (4), the components of a whole that can function independently setting of holder (3), be equipped with pocket (31) on the holder, ball (4) are placed in pocket (31) and with the raceway roll connection of inner circle and outer lane, its characterized in that: two holding grooves (32) are formed in the hole wall of each pocket hole (31) in a right-to-right mode, a wear-reducing block (5) is arranged in each holding groove (32), the two wear-reducing blocks (5) in each pocket hole (31) are symmetrical and face the center of the ball (4), and the wear-reducing blocks (5) are in butt joint with the ball (4).

2. A self-lubricating ball bearing as claimed in claim 1 wherein: antifriction piece (5) are including connecting friction portion (51), connecting portion (52) and installation department (53) in order, connecting portion (52) diameter is greater than installation department (53) diameter, friction portion (51) and ball (4) butt, installation department (53) activity cartridge is in mounting hole (33) on pocket hole (31) pore wall, be equipped with slider-spout anti-torsion structure between installation department (53) and mounting hole (33), installation department (53) are equipped with elastic component (7) in position department between connecting portion (52) and pocket hole wall.

3. A self-lubricating ball bearing as claimed in claim 2 wherein: the elastic piece (7) is of a disc reed structure.

4. A self-lubricating ball bearing as claimed in claim 2 wherein: one end of the mounting part (53) extending out of the pocket hole (31) is provided with a clamping ring (6).

5. A self-lubricating ball bearing as claimed in claim 2 wherein: the friction part (51) is of a strip-shaped plate structure, the arrangement direction of the strip-shaped plate is the circumferential tangential direction of the bearing, and the friction surface of the friction part (51) is of a spherical structure (511) which is concave and corresponds to the ball (4).

6. A self-lubricating ball bearing as in any one of claims 1-5 wherein: the antifriction block (5) is a powder metallurgy antifriction block.

7. A self-lubricating ball bearing as claimed in claim 1 wherein: the retainer is connected in a split riveting way.

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